TY - GEN AU - Sherman,S L AU - Freeman,S B AU - Allen,E G AU - Lamb,N E TI - Risk factors for nondisjunction of trisomy 21 SN - 1424-859X PY - 2006///0123 KW - Adolescent KW - Adult KW - Down Syndrome KW - epidemiology KW - Female KW - Humans KW - Male KW - Maternal Age KW - Middle Aged KW - Models, Genetic KW - Nondisjunction, Genetic KW - Pregnancy KW - Risk Factors N1 - Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.; Review UR - https://doi.org/10.1159/000086900 ER -